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ragabragab-hassanhassan-21583170
Question added by ragabragab hassanhassan, مهندس تشغيل وصيانة, اسالة مياة بغداد _ مشروع ماء الكرخ _ مركز التصفية بالطارمية - 10 years ago

How much chlorine residual water?

Water Efficiency

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